Abstract
We compute ground-state fidelity of the one-dimensional Bose-Hubbard model at unit filling factor. To this aim, we apply the density matrix renormalization group algorithm to systems with open and periodic boundary conditions. We find that fidelity differs significantly in the two cases and study its scaling properties in the quantum critical regime.
5 More- Received 15 November 2013
DOI:https://doi.org/10.1103/PhysRevA.89.033625
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